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![Joseph Thompson](https://secure.gravatar.com/avatar/fbc2e642a71deeb51d1d3b19965826d6?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Joseph Thompson
4,595 PointsGetting a "Bummer" remark asking whether my "Square constructor take[s] a single parameter named sideLength?"
Can someone show me what I am missing because I see it in the constructor.
namespace Treehouse.CodeChallenges
{
class Polygon
{
public readonly int NumSides;
public Polygon(int numSides)
{
NumSides = numSides;
}
}
class Square:Polygon
{
public readonly int SideLength;
public base Square(int sideLength)
{
NumSide = 4;
SideLength = sideLength;
}
}
}
2 Answers
![Steven Parker](https://uploads.teamtreehouse.com/production/profile-photos/969492/micro_tool_chess_set_2.jpg)
Steven Parker
230,688 PointsThe "base" reference should come after the constructor declaration, separated by a colon, and passing in "4" as the number of sides:
public Square(int sideLength) : base(4)
Also, you won't need the "NumSide" variable.
![Joseph Thompson](https://secure.gravatar.com/avatar/fbc2e642a71deeb51d1d3b19965826d6?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Joseph Thompson
4,595 PointsThanks, I didn't fully understand, but now it clicks and you helped point me in the right direction.